North of Île-de-France, Val-d’Oise is shaped by Roissy Airport, rural areas and active urban hubs. Groupe Hyperion provides individuals and businesses with CNAPS-licensed private detectives. Each assignment aims to collect evidence admissible before the civil, labour or criminal courts, in compliance with the law and privacy.
Our assignments for individuals
We support individuals with sensitive matters: adultery and divorce, child custody and maintenance, abuse of weakness, searches for missing persons or people lost to contact, asset investigations. Our methods combine tailing, surveillance and administrative research to produce solid evidence.
Our assignments for businesses
We help executives and HR departments protect their interests: checks on abusive sick leave, fraud and internal theft, investigations in cases of unfair competition, employee monitoring, labour tribunal investigations. All our interventions comply with the law and the code of ethics for private investigators.
Areas of operation
We operate throughout the Val-d’Oise department, notably in Cergy, Argenteuil, Sarcelles, Garges-lès-Gonesse, Franconville, Goussainville, Ermont, Taverny, as well as in other municipalities. Our regional network guarantees optimal responsiveness and local support.
Method and compliance
Each assignment is prepared through legal and strategic analysis. We use proportionate, traceable means, ensuring the admissibility of our reports. Our reports detail the observations, supported by material evidence whenever possible.